diff --git a/sapl/compilacao/migrations/0002_auto_20170825_1108.py b/sapl/compilacao/migrations/0002_auto_20170825_1108.py
new file mode 100644
index 000000000..e73b909a8
--- /dev/null
+++ b/sapl/compilacao/migrations/0002_auto_20170825_1108.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.13 on 2017-08-25 11:08
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('compilacao', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tipotextoarticulado',
+            name='content_type',
+            field=models.OneToOneField(null=True, on_delete=django.db.models.deletion.SET_NULL, to='contenttypes.ContentType', verbose_name='Modelo Integrado'),
+        ),
+    ]
diff --git a/sapl/compilacao/migrations/0003_auto_20170825_1136.py b/sapl/compilacao/migrations/0003_auto_20170825_1136.py
new file mode 100644
index 000000000..9104f98da
--- /dev/null
+++ b/sapl/compilacao/migrations/0003_auto_20170825_1136.py
@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.13 on 2017-08-25 11:36
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('compilacao', '0002_auto_20170825_1108'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tipotextoarticulado',
+            name='content_type',
+            field=models.OneToOneField(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='contenttypes.ContentType', verbose_name='Modelo Integrado'),
+        ),
+        migrations.AlterField(
+            model_name='tipotextoarticulado',
+            name='participacao_social',
+            field=models.BooleanField(choices=[(True, 'Sim'), (False, 'Não')], default=False, verbose_name='Participação Social'),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='tipotextoarticulado',
+            name='publicacao_func',
+            field=models.BooleanField(choices=[(True, 'Sim'), (False, 'Não')], default=False, verbose_name='Histórico de Publicação'),
+            preserve_default=False,
+        ),
+    ]
diff --git a/sapl/compilacao/models.py b/sapl/compilacao/models.py
index fa0581b70..1426c2908 100644
--- a/sapl/compilacao/models.py
+++ b/sapl/compilacao/models.py
@@ -1,6 +1,5 @@
 from datetime import datetime
 
-import reversion
 from django.contrib import messages
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.contrib.contenttypes.models import ContentType
@@ -13,6 +12,7 @@ from django.template import defaultfilters
 from django.utils.decorators import classonlymethod
 from django.utils.encoding import force_text
 from django.utils.translation import ugettext_lazy as _
+import reversion
 
 from sapl.compilacao.utils import (get_integrations_view_names, int_to_letter,
                                    int_to_roman)
@@ -111,18 +111,17 @@ class TipoTextoArticulado(models.Model):
     descricao = models.CharField(max_length=50, verbose_name=_('Descrição'))
     content_type = models.OneToOneField(
         ContentType,
-        null=True, default=None,
-        verbose_name=_('Modelo Integrado'))
-    participacao_social = models.NullBooleanField(
-        default=False,
         blank=True, null=True,
+        on_delete=models.SET_NULL,
+        verbose_name=_('Modelo Integrado'))
+    participacao_social = models.BooleanField(
+        blank=False,
         choices=YES_NO_CHOICES,
         verbose_name=_('Participação Social'))
 
-    publicacao_func = models.NullBooleanField(
-        default=False,
-        blank=True, null=True,
+    publicacao_func = models.BooleanField(
         choices=YES_NO_CHOICES,
+        blank=False,
         verbose_name=_('Histórico de Publicação'))
 
     perfis = models.ManyToManyField(
diff --git a/sapl/compilacao/tests/test_tipo_texto_articulado_form.py b/sapl/compilacao/tests/test_tipo_texto_articulado_form.py
index afb8111ce..bb35ef688 100644
--- a/sapl/compilacao/tests/test_tipo_texto_articulado_form.py
+++ b/sapl/compilacao/tests/test_tipo_texto_articulado_form.py
@@ -16,14 +16,13 @@ def test_valida_campos_obrigatorios_tipo_texto_articulado_form():
 
     assert errors['sigla'] == [_('Este campo é obrigatório.')]
     assert errors['descricao'] == [_('Este campo é obrigatório.')]
-    assert errors['content_type'] == [_('Este campo é obrigatório.')]
     assert errors['participacao_social'] == [_('Este campo é obrigatório.')]
     assert errors['publicacao_func'] == [_('Este campo é obrigatório.')]
 
-    assert len(errors) == 5
+    assert len(errors) == 4
 
 
-_content_types = choice_models_in_extenal_views()[1:]
+_content_types = choice_models_in_extenal_views()
 
 
 @pytest.mark.parametrize('content_type', _content_types)